GRAVITATIONAL MICROLENSING AND EXTENDED SOURCE MODELS

V. M. Sliusar, V. I. Zhdanov

Анотація

We perform statistical simulations of light curves of extended microlensed sources having different brightness distribution in the source plane. We generated a set of realizations of lensing point mass system that takes into account an external shear; these include 12000 point masses which are uniformly distributed in the lens plane. The list of the circular symmetric source models used includes gaussian, limbdarkening, power law and Shakura-Sunyaev accretion disk models observed face-on. We estimated difference &eta; between the amplification curves (an analog of the light curves) for these different source models. This difference appears to be considerable, in some cases it amounts up to &sim; 10%. However, the effect of theshear within limits = 0 &divide; 0.5 is not considerable, though it leads to some diminishing of &eta;.